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Chart of the Morse code 26 letters and 10 numerals [1]. This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur [2]. Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.
Mnemonic major system. The major system (also called the phonetic number system, phonetic mnemonic system, or Hérigone's mnemonic system) is a mnemonic technique used to help in memorizing numbers. The system works by converting numbers into consonants, then into words by adding vowels. The system works on the principle that images can be ...
The symbol for 100 was written variously as 𐌟 or ↃIC , and was then abbreviated to Ↄ or C , with C (which matched the Latin letter C) finally winning out. It might have helped that C was the initial letter of CENTUM, Latin for "hundred". The numbers 500 and 1000 were denoted by V or X overlaid with a box or circle.
Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...
The numbers in this example refer to the calendar year 2024 and the crosses to Christ. The letters C, M, and B stand for the traditional names of the biblical Magi ( Caspar , Melchior and Balthazar ), or alternatively for the Latin blessing Christus mansionem benedicat ('May Christ bless this house'), [ 3 ] or IIIK referring to the three kings.
This is an accepted version of this page This is the latest accepted revision, reviewed on 22 September 2024. Letter names for unambiguous communication Not to be confused with International Phonetic Alphabet. Alphabetic code words A lfa N ovember B ravo O scar C harlie P apa D elta Q uebec E cho R omeo F oxtrot S ierra G olf T ango H otel U niform I ndia V ictor J uliett W hiskey K ilo X ray ...
The Russian alphabet (ру́сский алфави́т, russkiy alfavit, [ a ] or ру́сская а́збука, russkaya azbuka, [ b ] more traditionally) is the script used to write the Russian language. It comes from the Cyrillic script, which was devised in the 9th century for the first Slavic literary language, Old Slavonic.
The term numbers or numerals or digits often implies only these symbols, however this can only be inferred from context. Europeans first learned of Arabic numerals c. the 10th century , though their spread was a gradual process.